Auguste maire



Patented July 1, 1919.

A. MAIRE.

DRIVE FOR PUMPS.

APPLICATION FILED FEB.

UNITED STATES PATENT oEEIoE.

AUGUSTE MAIRE, OF ROUTE DE BEZONS, ARGENTEUIL, FRANCE, ASSIGNOR T SOCIETE LORRAINE DES ANCIENS ETABLISSEMENTS DE DIETRICH & CIE. DE LUNEVILLE, 0F

rams, FRANCE.

DRIVE FOR PUMPS.

Specification of Letters Patent.

- Patented July 1, 1919.

Application led February 18, 1.918. Serial No. 217,868.

T0 all whom it may concern:

' cation.

In dealing with certain liquids and more particularly mineral spirits, it is very difficult to construct pumps having revolving or sliding pum shafts in which the liquids will not leak t rough to'the outside.

This invention has for its object to provide an improved ump in which the above stated drawback 1s eliminated by an im,

proved drive having no shaft passing through a stuiling box. v

The improved drive consists of an armature of soft iron or, a ermanent magnet driven by the engine an revolving around a box inside of which latter there is journaled a permanent magnet for driving the pump direct, thispermanent magnet being caused to rotate by the magnetic flux which passes through the'sides o the box owing to the arrangement in the said sides of' small blocks of metal having the desired properties of magnetic permeability.

In the accompanying Idrawings which illustrate two constructional examples of the invention,

Figure 1 is a an improved pump invention.

Figs. 2 and 3 are sections taken on the lines 2J2 and 3--3 respectively of Fig. 1.

Fig. 4 is asection similar to that of Fig. 2 illustrating a modification.

Referring first to Figs. 1, 2 and 3, A is a fluid-tight box closed by a cover B in which. are arrangedto move two electro-magnets C set pole to pole andconnected to each other by a non-magnetic part H which also serves as a support for the rotary shaft I that is formed with a screw-thread D.

The magnet C revolves with slight friction in the box A, and the side of said box is traversed by pieces E of soft iron which, while making a tight jointk between the inside and the outside ofthe box, allow the magnetic flux to pass through' from the inside to the outside.

On the .outside of the box A there 1s arlongitudinal axial section of drive according to this ranged to rotate an armature F which is likewisel of soft iron and whose pole pieces are ]ournaled with sli rht friction on the outside of the box. his armature may have a winding as shown in Fig. 1.

The soft iron armature F is situated inside the casing G, and the space between the box A and the box G may be filled with lubricant.

When the armature F is driven from the engine, the magnet C situated inside the box A is caused to have the same motion as the armature, and it will drive in its turn, through the' Worm D, the Wheel J that serves to drive either a geared pump or any other sort of pump in such a manner that the liquid can only pass through the inlet and outlet passages provided in the pump, and so that there is no need to provide any kind of packing for preventin leakage of liquid between the shafts and their journals.

In the modification shown in Fig. 4, instead of the wound armature F there is employed a double permanent magnet F which is connected by a non-magnetic part K to the driving shaft. In this construction the magnet situated inside the fluid-tight box an the outer driving magnet have a tendency to bring their opposing poles together.

Having now described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A drive for pumps comprising in combination: a fluid tight box, a permanent magnet adapted to rotate substantially in contact'with the inside face of a Wall of said box, driving means for the pump, controlled by said permanent magnet, blocks of a magnetic material provided in said wall, a Huid tight easing surrounding said wall, and adapted to contain a lubricant,.a shaft journaled in said Huid tight casing, a structure adapted to be traversed by a magnetic field said structure being 'carried by said shaft and havin parts thereof which rotate substantially in contact with the outside face of material provided in said cylindrical wail, tizilly in Contact therewith, und means for 10 n Huid tight casing surroum ing said cylinrotating said shaft.

dricul wall und adapted to contain a lubri- In testimny whereof I have signed my runt, n shaft journnled in seid Huid tight nume to this specification in the presence of fusing, u structure adapted to be traversed two subscribing witnesses.

by it nmgnetic field, carried hy said shaft, AUGUSTE MAIRE. Suid structure having proJeeting arms Witnesses: which partially embrace the outer peri hery LOUIS MOSES,

of said cylindrical wall and rotate su stan- Y CHAS. P. PREssLY. 

